<script setup lang="ts">
import { downloadFileAPI, getEnterpriseDetailAPI } from "@/apis/enterprise";
import type { EnterpriseDetail, Rent } from "@/types/enterprise";
import { onMounted, ref } from "vue";
import { useRoute } from "vue-router";

const route = useRoute();

const detail = ref<EnterpriseDetail>({} as EnterpriseDetail);

const getDetail = async () => {
    if (route.query.id) {
        // 根据 id 获取企业详情
        const res = await getEnterpriseDetailAPI(route.query.id as string);
        // 保存企业详情
        detail.value = res.data;
    }
};

onMounted(() => {
    getDetail();
});

// 获取预览链接
const getPreviewUrl = (url: string) => {
    // 判断路径中文件后缀是是否为 pdf 还是 doc
    const suffix = url.split(".").pop();
    // doc 需要拼接链接，利用微软提供的免费 office 服务预览
    if (suffix === "doc") {
        const previewURL = "https://view.officeapps.live.com/op/view.aspx?src=";
        return previewURL + encodeURIComponent(url);
    }
    // pdf 无需处理，直接返回即可，浏览器支持预览 pdf
    return url;
};

// 下载文件
const downloadFile = async (row: Rent) => {
    // 根据附件 id 下载文件，返回二进制的 blob 数据
    const res = await downloadFileAPI(row.contractId);
    // 下载文件用 a 标签
    const aElement = document.createElement("a");
    // 把 blob 数据转换成 url 链接（类似鸿蒙的沙箱路径）
    aElement.href = window.URL.createObjectURL(res);
    // 指定下载后的文件名
    aElement.download = row.contractName || "";
    // 点击下载
    aElement.click();
    // 释放 Blob URL，避免内存泄漏
    window.URL.revokeObjectURL(aElement.href);
    // 移除用于下载的 a 标签
    aElement.remove();
};
</script>

<template>
    <div class="detail-enterprise">
        <header class="add-header">
            <el-page-header content="查看企业" @back="$router.back()" />
        </header>
        <main class="add-main">
            <div class="form-container">
                <div>{{ route.query }}</div>
                <div class="title">租赁记录</div>
                <div class="table-container">
                    <!-- 企业租赁记录 - 表格 -->
                    <el-table :data="detail.rent" style="width: 100%" :border="true">
                        <el-table-column type="index" label="序号" width="50" />
                        <el-table-column prop="name" label="租赁楼宇" width="180" />
                        <el-table-column label="租赁起止时间" width="280">
                            <template #default="{ row }">
                                {{ row.startTime }} - {{ row.endTime }}
                            </template>
                        </el-table-column>
                        <el-table-column label="租赁合同(点击预览)">
                            <template #default="{ row }">
                                <el-button type="text">
                                    <!-- 新窗口打开预览 target="_blank" -->
                                    <a :href="getPreviewUrl(row.contractUrl)" target="_blank">
                                        {{ row.contractName }}
                                    </a>
                                </el-button>
                            </template>
                        </el-table-column>
                        <el-table-column prop="createTime" label="录入时间" />
                        <el-table-column prop="address" label="操作">
                            <template #default="{ row }">
                                <el-button type="text" @click="downloadFile(row)">合同下载</el-button>
                            </template>
                        </el-table-column>
                    </el-table>
                </div>
            </div>
        </main>
    </div>
</template>

<style scoped lang="scss">
.detail-enterprise {
    background-color: #f4f6f8;
    height: 100vh;

    .add-header {
        display: flex;
        align-items: center;
        padding: 0 20px;
        height: 64px;
        background-color: #fff;

        .left {
            span {
                margin-right: 4px;
            }

            .arrow {
                cursor: pointer;
            }
        }

        .right {
            text-align: right;
        }
    }

    .add-main {
        background: #f4f6f8;
        padding: 20px 130px;

        .form-container {
            background-color: #fff;
            margin-bottom: 20px;

            .title {
                height: 60px;
                line-height: 60px;
                padding-left: 20px;
            }
        }

        .table-container {
            padding: 20px;
        }

        .preview {
            img {
                width: 100px;
            }
        }
    }
}
</style>
